Amos josiah burton



No. 749,839. PATENTED JAN. 19, 1904. A.J.BURTON.

BAND SAW GLAPBOARD MACHINE.

APPLICATION FILED APR. 4, 1903. N0 MODEL. 3 SHEETS-SHEET 2.

Zwrw 50 I? No. 749,839. PATENTED JAN. 19,1904. A. J.'BURTON. BAND SAWOLAPBOARD MACHINE.

APPLIUATION FILED APR. 4, 1903.

NOiMODEL. 3 SHEETS-SHEET 8.

min/61975 m. I Inrezzion @ZQQQ HX X W THE norms PETERS co. vnnrmJTv-immsumcaon, B

UNTTED STATES Patented January 19, 1904.

PATENT OEEIcE.

AMOS JOSIAH BURTON, OF PARRY SOUND, CANADA.

BAND-SAW CLAPBOARD- IVIACHINE.

SPECIFICATION forming part of Letters. Patent No. 749,839, dated January19, 1904. Application filed April 4, 1903- Serial No. 151,135. (Nomodel.)

To all whom it may concern:

Be it known that I, AMos JosIAH BURTON, saw-filer, of the town anddistrict of Parry Sound, Province of Ontario, Dominion of Canada, haveinvented certain new and useful Improvements in Band-SawClapboard-Machines, of which the following is a specification.

My invention relates to improvements in band-saw clapboard-machines; andthe objects of my invention are to devise a machine of simple and cheapconstruction, whereby a bolt or log of cylindrical form may be broughtor fed up to a band-saw in such a manner as to cut clapboards from thebolt, the direction of the cut taken by the band-saw being radial,further objects being to rotate the bolt after each cut through an arewhich will make the clapboard of a suitable thickness; and itconsistsyessentially, of a suitable base or turntable upon which themachine is mounted, a frame supporting upper and lower center points tosupport the bolt, means for advancing and retracting the movable portionof the frame to feed the bolt up to the saw and with-.

draw it therefrom, and means for automatically rotating the bolt througha suitable angle when it has been withdrawn from engagement with thesaw, the various parts of the device being constructed and arranged indetail as hereinafter more particularly described.

Figure 1 is a perspective view of the complete machine. Fig. 2 is an endview of the same. Fig. 3 is a plan. Fig. 4 is a section through themachine on the line X X, Fig. 3, the upper portion of the machine beingcut away. Fig. 5 is a detail perspective view of a gripping devicelocated at the upper part of the frame. Fig. 6' is a detail perspectiveview of part of the mechanism for automatically rotating the bolt thedesired amount after each cut. Fig. 7 is a detail perspective view of acasting employed in'the forward portion of the machine. I Fig. 8 is adetail sectional View of the lower center point for supporting the boltand the means for supporting the same. Fig. 9 is a side view of aportion of the forward left-hand corner of the machine, showing parts ofthe automatic mechanism for rotating the bolt. Fig. 10 is a detail ofthe bar and eccentric clamp for securing the swinging beam centrally inposition. Fig. 11

is a section through the rocking bar Q, the

I machine is pivotally mounted. This base consists of a cross-timber a,extending completely across the machine at the center thereof, areshapedtimbers a and (0 the front and rear cross-timbers a a, the arc-shapedtimbers being bolted at their ends, respectively, to the ends of thecentral timber and one end of each arc-shaped timber to the end of oneof the cross-timbers a and a.

Upon the base A a pivoted base B rests; The base B comprises sidetimbers 6 b, a central longitudinal timber b and front and rear timbersZ2 Z). By means of a suitable pivotal bolt C this base and all parts ofthe machine supported thereby are pivotally mounted upon the stationarybase A in such a manner as to be capable of turning in the directionindicated by the arrow in Fig. 3, so that the core may be removed whenthe clapboards have all been sawed from a bolt and a new bolt may be putin place. I

The frame D of the portion of themachine which is adapted to be advancedand retracted consists of upright posts 0? cl 0Z 0Z lOIJgitllf dinalpieces d d cl, located, respectively, at the sides and at the center ofthe lower pore tion of the slidable frame. End cross-timbers (Z and (iconnect these longitudinal pieces at the front and rear, respectively.Gross-timbers d (Z extend across the tops of the two front and the tworear upright posts, being suitably bolted thereto, and longitudinalpieces (Z and 01 extend between the two posts on either side of themachine near their upper ends. al is a central longitudinal timber,which is pivotally secured to the rear crosstimbers (Z by a bolt cl. Tothe forward end of this timber, which overhangs the upright portion ofthe frame, the upper center point E is rotatably secured in a suitablethreaded bearing e and is provided with a crank and handle e, by whichit may be forced into or withdrawn from the bolt 17.

timbers d 6?, respectively. These plates have beveled or sloping tonguesformed integral therewith and extending outwardly therefrom.

provided at the other end thereof.

These tongues are designed to slidably engage guides or grooves formedin suitable side pieces G G, which are bolted or otherwise secured tothe side pieces Z) Z of the secondary base. One of these guides may bemade in two piecesthe guide G, for instance, as shown in Fig. 2- tofacilitate setting up the machine and adjusting the distance between thegrooves to suit the position of the side plates F F and also to take upthe wear. The lower support or center point H for the bolt is square inorder that it may turn the bolt when desirable. The lower portion A ofthis point or center piece is tapered and rounded.

to remove the pin from the socket when desirable. This socket isrotatably supported in a vertical bearing k which is suitably bolted orotherwise secured to the cross-timber 0Z at the center thereof. I is aworm which is secured to a suitable shaft J and is adapted to engage theworm gear-wheel if.

The sh aftJ is j ournaled in suitable bearings, the arrangement of thebearings being preferably as shown in the drawings, in which a singlebearing K is provided at one end of the shaft, and a double bearing ortwo bearings Z Z, secured to the same base or casting L, are The basefor the bearings Z Z is shown most clearly in Fig. 7 and it consists ofthe horizontal portion Z having raised portions Z Z at the ends thereof,provided with grooves to form the lower portion of the bearings Z Z. Adepending portion or bracket is formed at the outer end of the casting,the lower end thereof being formed in the shape of the upper portion ofa bearing of a shaft, to be hereinafter described.

At the end of the shaft J 'a gear-wheel M is provided and is adapted tomesh with a gearwheel M, which is secured to the shaft N. The shaft N isjournaled in the bearing formed at the lower extremity of the bracket Z,and

also in a bearing 01., secured to the under side of the timber (Z5, aslot at being formed between the timber b and the guide G, through whichthe shaft passes. A collar n is provided at the inner end of the shaft Nto prevent longitudinal motion thereof.

0 is a ratchet-wheel, which is also secured to the shaft N.

P is a rocking-lever, which is fulcrumed on the shaft N at both sides ofthe ratchetwheel 0. Pawls p are pivo'tally secured between projectionsextending upwardly from each side of an enlarged portion of this rockinglever, and these pawls are adapted to engage the ratchet-wheel O atslight intervals apart, so arranged that there will always be one pawlat least in engagement with a tooth and ready to rotate the wheel.Springs p are provided and are adapted to force the pawls downwardly tokeep them in engagement with the teeth of the ratchet-wheel.

The lower edge of the lever P rests upon a roller q, mounted on a pin g,which is adjustably secured in a slot 1 formed in a rocking bar Q. Thisrocking bar is suitably secured at one end to a shaft R, which issupported in bearings 0w, the bearing a" being secured to the outside ofthe timber b and the bearing r to the inside, the shaft R extendingcompletely through the same. The inner extremity of the shaft R isprovided with a cam S, which is securely clamped thereon and is providedat its upper extremity with a roller 8, which is mounted on a spindle 8,supported in projections formed at the two ends of the cam.

T is a plate which is adjustably secured by bolts t to the side of thetimber d. This plate is provided with a projection 25, which is adaptedto engage the roller 8, thereby tripping the cam and rotating the shaftR and the rocking arm Q the required amount at determined times and forreasons to be hereinafter described. A spring g draws the bar 9 normallydownward, so as to bring it back to position after it had been raised,and a stop is provided to limit the downward swing thereof. (See Fig.9.)

The mechanism which I have just described is that which acts directly onthe lower center point H to revolve the same and the bolt through arequired angle and at required times.

I will now describe the mechanism by means of which the slidableportions of the machine are advanced and retracted to bring the boltinto engagement with and withdraw it from the band-saw U.

V V are loose and tight pulleys, respectively, which are mounted on ashaft 0), bearings 2: 01 being provided for the shaft, these bearingsbeing secured to blocks 6 Z), which in turn are secured to thelongitudinal timbers b and Z of the secondary base B of the machine.

W is a shaft, which is mounted in bearings w w, also secured toEtheblocks Z Z)". A crankwheel 2 is provided at the inner end of the bearingw and is secured to the shaft W. A

able distance.

secured between the jaws of a rocking clamp 5.

This clamp is provided with laterally-extending rounded projections,which are journaled in bearings 6 and'7, secured to the cross-tim ber d8 and 9 are meshing gear-wheels, which are eccentrically mounted uponthe shafts o and W, respectively.

It will thus be seen that when the shaft '0 is driven by the belt on thetight pulley the gearwheels 8 and 9 will cause the shaft W to rotate,and thus the pitman 3 will advance and retract the slidable portion ofthe machine. The eccentrically-mounted gears 8 and 9 are so set as tomake the forward motion of the machine slow and the backward motionconsiderably faster.

In Fig. 5 I have shown a detail perspective view of the device forsecuring the beam d, which carries the upper center point in its correctposition. This consists of a bracket 10, having horizontal portions 11and 12, the portion 11 adapted to be secured to the crossbeam d and theportion 12 adapted to overlap the top of the beam cZ A bar 13 extendsthrough the vertical portion of the bracket 10, and when the beam d 13is in the proper position this bar will pass through a hole 14, formedin the beam, its end projecting a suit- Agroove is formed in the bar,and this groove is engaged by a latch or hook 15, which is pivotallysecured to the side of the beam d An eccentric 16 (see Fig. 2) isrotatably secured to the opposite end of the rod or bar and is providedwith a handle by which it may be rotated, and thus the bar is drawn inthe direction indicated by the arrow, which securely holds the beam inits central position.

Having now particularly described-the details of construction of theprincipal parts of 'my invention, I will proceed to explain the mannerof working the machine.

' When a bolt is to be placed between the cencenter point It is thenheld in the vertical position and the timber or supporting-beam (2 isswung back into the central position, and by means of the handle a thecenterE is forced into the center of the upper end of the bolt. Themachine is then swung round on the turn-table or base A till it is inthe position shown in the drawings. The machine board of properthickness.

will now be started by slipping the belt onto the tight pulley o. Theslidable portions of the machine will be caused to advance by means ofthe pitman 3, the crank-wheel 2, and the gears 8 and 9. It may here bementioned that the bolt is about two inches clear-of the band- 'saw whenit is at the extremity of its backward motion. It willthus be seen thatas the bolt is advanced against the saw a radial cut will be taken whoselength will depend on the diameter of the crank-wheel 2. As thecrankwheel continues to revolve the bolt and the slidable portions ofthe machine will be quickly drawn back, and as soon as the bolt is clearof the saw the projection 2," will engage the roller of the cam S. Thiswillcause the shaftR and the rocking bar Q to turn through a suitableangle. The roller (1 on the pin q, secured to the rocking bar Q andengaging the under side of the lever P, will therefore cause the saidlever to be raised into a position approximately as shown in Fig. 9 indotted lines. The result of this motion will be that the pawls 19 willrotate the ratchet-wheel 0, thus causing the gear-wheel M and thegear-wheel M to rotate. The rotation will thus be transferred throughthe shaft J to the worm I. The worm which engages the worm gear-wheel I?will rotate the gearwheel, which in its turn causes the point H torotate, thus turning the bolt a suitable amount. The dimensions andpositions of the worm, the gearwheels, the ratchet-wheel, the rockinglever, the rocking bar, and the cam are so adjusted that the rotation ofthe bolt will be just suffi-' cient to make the next cut of the sawsuificiently far from the. last out to cut a clap- When the bolt hasbeen radially cut all around, there will be a thin portion of the fiberof the wood holding the clapboards to the center core. This is severedby means of a specially-made tool of substantially T shape, havingblades extending to both sides.

The roller q and the pin q, upon which it is rotatably mounted, may beadjusted longitudinally in the slot g in the rocking bar Q. The objectof this adjustment is to enable the operator to set the machine in such:a way that it will cut clapboards of the proper thickness, whatever thediameterof the bolt or log may be. When a log of large diameter is beingcut, the angle through which the log must be rotated to obtain aclapboard of a certain width will of course be smaller than the anglethrough which a small log would have to be rotated. used the throw givento the rocking lever P will be less, and in this case the roller and pinwill be moved to a position in proximity to the shaft R. If, however, asmall logis being cut, the roller and pin will be moved away from theshaft R in the slot g so as to give the rocking lever P a greater throw.The lever P while the machine is advancing Consequently when a large logis and retracting will remain absolutely horizontal and will not swingexcept when the cam is tripped by the engaging projection, the

reason for this being that the under side of the lever, which rests onthe roller q, is perfectly straight and horizontal.

The advantages of this machine over machines previouslyused will beimmediately apparent. The clapboard-machines which were used in the pastwere designed to cut the bolt horizontally, and for this purpose arotary saw was used which cut from one end of the bolt to the other.This necessitated feeding the bolt through a distance of six feetthatis, its .entire lengthand a little extra at each end to allow the saw topass clear before the bolt was turned. As the cut is taken in a radialdirection in the present device, the movement will of course be only thewidth instead of the length of the clapboard, and the result is a veryconsiderable saving of time. Another advantage of the device is that themachine may be used to saw blocks or bolts of any diameter withincertain limits, whereas in most machines previously used it wasimpossible to make adjustments to suit logs whose diameter diflere toany extent.

The core which is left after a bolt has been.

sawed is of no greater diameter than the diameter of the center points,which of course prevent the band-saw penetrating in farther toward thecenter of the bolt. It will thus be seen that the waste material isreduced to a minimum.

It will now be seen that I have devised a machine for the purpose setforth herein which will be extremely cheap and simple in construction,simple in manipulation, and readily adjusted to suit logs of varioussizes either in diameter or length.

I am awarethat it is not new to provide a machine to out clapboards froma log vertitically held, as herein described, but the details ofconstruction which I have invented whereby such machines are greatlycheapened and simplified are the features for which I desire to procureprotection.

What I claim as my invention is 1. In a machine of the class describedthe combination with the slidable frame, of a beam located at the upperportion thereof, upper and lower center points, the lower center pointsecured to the movable frame and the upper center point secured to theforward end of said beam, a vertical pivot for securing the rearward endof the beam to the upper portion of the frame, a Z-shape plate securedto the center portion of the front of the upper part of the frame, andmeans for securing the forward end of the beam in said Z-plate.

2. In a device of the class described the combination with the slidableframe and the base upon which the same is slidably mounted, of

upper and lower center points, a shaft for driving the lower centerpoint intermittently, a ratchet-wheel on the shaft a rocking leverfulcrumed on the shaft, a plurality of pawls pivotally secured to therocking lever and designed to rotate the ratchet-wheel during the upwardswing of the rocking lever, a rocking bar, a projecting pin adjustablysecured to the rocking bar, a roller mounted thereon over which therocking lever is adapted to slide normally in a horizontal position, ashaft to which said rocking bar is secured, bearings for said shaftsecured to the base of the machine, a cam on the end of the shaft and atrip or projection secured to the slidable frame and adapted to engagethe cam during the motion of the slidable frame whereby the rocking bar,and consequently the rocking lever is raised and the center point isrotated as and for the purpose specified.

3. In a device of the class described the combination with the base andthe slidable frame carrying the upper and lower center points, of acrank-wheel, a shaft upon which the same is mounted, bearings secured tothe stationary portion of the base of the machine in'which said shaft isjournaled, a crank-pin secured to the crank-wheel, a pitman rotatablysecured to'the crank-pin, a rocking clamp adjustably secured to thepitman and rotatably secured to the slidable frame whereby the extremeforward and rear positions of the slidable frame may be varied accordingto the diameter of the bolt or log to be cut.

4. In adevice of the class described the combination with the slidableframe and the pivoted beam resting on the top thereof and carrying theupper center point, of a bracket secured to a cross-beam of the frameand having an upwardly-extending portion and a horizontal portionadapted to overlap the top of the beam, a rod or bar extending throughthe vertical portion of the bracket and through the beam, an eccentricpivotally connected to one end of the bar and adapted to bear againstthe vertical portion of the bracket and draw the bar rearwardly, and alatch or hook pivotally secured to the opposite vertical side of thebeam adapted to engage the end of the bar as and for the purposespecified. I

5. In a deviceof the class described the combination with the stationarybase and the slidable frame mounted thereon, the upper and lower centerpoints carried by said slidable frame, of a driving-shaft for rotatingsaid lower center point intermittently, a ratchetwheel secured to saidshaft, a rocking lever fulcrumed on the shaft, a plurality of pawlspivotally secured to the rocking lever and adapted to engage theratchet-wheel when the Maser) 5 'lever normally in a horizontalposition, a shaft to'which the rocking bar is rigidly secured, saidshaft extending through the lower portion of the base, a cam adjustablysecured to the end of the shaft and a trip or projection secured to theslidable frame and adapted to engage the cam 1161113116 bolt is clear ofthe saw thereby through the interposed mechanism causing the bolt torotate through the necessary angle as and for the purpose speci- IOfied.

Signed at the town of Parry Sound, in the Province of Ontario, this 30thday of March,

AMOS JOSIAH BURTON. Witnesses:

JOSEPH WILLIAM FITZGERALD, E. PIRIE.

